const provinceArr = [
    {code: 1, name: "四川省"},
    {code: 2, name: "贵州省"},
    {code: 3, name: "云南省"}];

const cityArr = [
    {code: 1, name: "成都", provinceCode: 1},
    {code: 2, name: "内江", provinceCode: 1},
    {code: 3, name: "广安", provinceCode: 1},
    {code: 4, name: "贵阳", provinceCode: 2},
    {code: 5, name: "六盘水", provinceCode: 2},
    {code: 6, name: "毕节", provinceCode: 2},
    {code: 7, name: "昆明", provinceCode: 3},
    {code: 8, name: "西双版纳", provinceCode: 3},
    {code: 9, name: "大理", provinceCode: 3}];